Give each service its own address

Give every shop, app and newsletter its own address, like shopify.k3m9@yourdomain.com. Mail to it lands in your inbox as normal. If spam ever starts arriving at one, you'll know who leaked it, and you can shut that address off.

Make an alias

1. Go to Settings → Just me. Only owners and admins can manage aliases.
2. In Aliases, type who it's For, like "Shopify".
3. Pick the domain it's On, and the inbox it Delivers to.
4. Click New alias. Rookery shows the new address.
5. Copy it and use it when you sign up for that service.

See who's writing

Each alias shows how many emails came in, when the last one arrived, and which domains sent them. If a new domain starts writing to an alias, the conversation says so, and that it may have leaked.

Block an alias

1. Find the alias in Settings → Just me.
2. Click Block. Mail to it is turned away from now on.
3. To turn it back on, click Unblock.

Good to know

• Aliases need your own domain, set up so that any address on it can receive mail (a catch-all). An owner sets that up in Settings → Domain.
• The four random characters at the end make an alias hard to guess.
• A conversation that came in through an alias shows "via" and the alias address.
• You can make as many aliases as you like.
• Aliases can't be renamed or deleted, only blocked.
• Mail sent to a new address on your catch-all domain can become an alias by itself. Choose the inbox it goes to under Just-me mode.